A person being overweight/underweight which leads to deficiency diseases such as type 2 diabetes

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What is metabolic rate?

The speed at which chemical reactions take place in your body

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Why are people who exercise healthier than people who dont?

Because exercise decreases the amount of stored fat in your body

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What is a pathogen?

A disease causing microorganism

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How do white blood cells help defend against a pathogen?

They engulf/digest pathogens. Produce Antibodies, which destroy particular bacteria/virus. Produce antitoxins which counteract toxins produced by the pathogen

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What is a vaccination?

When a small dead/inactive disease is injected into your body stimulating the release of white blood cells which produce antibodies to fight the disease.

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What did Ignaz Semmelweiss come up with?

He recognized the importance of handwashing in the prevention of spreading infections. he made nurses/doctors wash their hands before and after dealing with patients, which led to a decrease in deaths

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What is a painkiller?

Helps relieve symptoms of the disease,but does not kill the pathogen

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Can antibiotics kill viruses? explain why

No, because viruses live inside cells and reproduce inside of them

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What does overuse of antibiotics lead to?

Antibiotic resistance

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What is a MMR Vaccine?

Protects children against Measles, Mumps and Rubella

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What does a virus do?

Replicate themselves and invade your cells

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What does bacteria do?

Damage your cells and produce toxins

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Name the 4 receptors?

Receptor in: Eye,Ear,tongue and skin

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What is a reflex action?

Automatic/rapid involuntary move

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What is a hormone?

Secreted by glands usually transported to the target organs via the bloodstream

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Name the 3 hormones

FSH, Oestrogen and LH

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What is the function of the 3 hormones?

FSH: In pituitary gland, causes egg to mature and stimulates release of oestrogen. LH: Stimulates release of egg from ovary. Oestrogen: Found in Ovaries and furthers release of FSH

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What are plants sensitive to?

Light,moisture and Gravity

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What is phototropism?

plant growth response to light

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What is tropism?

Plant growth response to stimulus

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What is Geotropism?

Plant growth response to gravity

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What is selective Weed Killers?

Auxin makes broad leaved plants grow out of control and die.

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What is a drug?

Drugs are chemicals that change the way our body works

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What is a statin?

Drugs that lower cholesterol in the blood and stop the liver producing too much cholesterol.

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Describe the drug thalidomide

Originally used as sleeping pills,but also seemed to be effective relieving morning sickness in pregnant women, however it wasnt tested on them, unfortunetly the babies born suffered from severe limb abnormalities

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What do plants need to survive and reproduce?

light,carbon dioxide,oxygen,water and nutrients

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what do animals need to survive and reproduce?

Food,water,shelter,mates and territory

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why do Mammals in a cool climate grow to a large size?

because to keep their ratio as small as possible to maintain body heat

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what does it mean by being the most competitive?

an organism will be more likely to survive and pass its genes on to its offspring

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How can an environment change?

The environment can change due living factors like a new predator or disease or a non-living factor like a temperature rise or lack of sun and water